Bulletin printing machine



Oct. 13, 1931. w, MacKENZlE 1,826,805

BULLETIN PRINTING MACHINE v Original Filed June 20. 1922 6 Sheets-Sheet l o 20 21a gas 218 276/ r 277' Y ZikzlsQdit;

Oct. 13, 1931. rrw. MackENZ lE v1,826,805

' BULLETIN VPRINTING ACHINE Original Filed June, 20. 1922 6 Sheets-Sheet 2 v v l Wain/eases. Invezzfar.

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Oct. 1-3, 1931. T. w. M KENZlE 1,826,305

BULLETIN PRI NTlNG MACHINE Original Fi led, June 20. 1922 I 6 Sheets-Sheet .4

Winesses. I I

I .T fiomas ii fmllzzz'g Oct. 13, 1931. T. w. M KENZIE 1,326,805

BULLETIN PRINTING MACHINE Original Filed June 20. 1922 6 Sheets-Sheet 5 o 126 114 I, w 0 14a 0 71 116 l J r ZZZ 271495.55? fizz/6222 02:

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Patented Oct. 13, 1931 UNITED STATES,

PATENT OFFICE THOMAS W. KLCKENZIE, OF NEW LONDON, CONNECTICUT, ASSIGNOR, IBY MESNE AS- SIGNMENTS, TEE MECHANICAL ENGINEERING CORPORATION, OF NEW LONDON,

CONNECTICUT, A OOBYOBATION OE CONNECTICUT I BULLETIN PRINTING momma Beilled for abandoned application Serial No. 569,708, filed June 20,1982. Thil application illed February i 7, 1929. Serial lid-338,807.

This invention relates to telegraph bulletin printing machines, and especially to those suitable for printing newspaper bulletins and the like in page form on a continuous sheetof paper and in which the ty may be quite lar e so as to be easily read rom adistance. hlS specification and'the invention herein are substantially the same as that of my former application Serial No. 569,702, filed June 20, 1922. .v

The invention relates particularly to improvements in the tele raph bulletin printer described in the, U. S. atent No. 950,473, of

Campbell and Davis, issued March 1, 1910,

to which reference is made for a general un-.

of electric current is connected to the type selecting mechanism.

arm fast on said shaft. The switch arm is rovided with contacts engageable with a seecting s'witchhaving an annular series of contacts each corresponding to a character on the type wheel, and engageable by the switch arm when such corresponding char-'1 1peosition'. I The controlactor is in printing ling typewrlter may remote from the machine and comprises key levers operat ng ineys depressed means erates sa1d spac ng means; and there is also the invention are to iminitial position and tions dividual contact switches respectively, whereby 'a source of electric current is connected to the correspondlng contact of said series.

A selecting mechanism or device electricall connected to said arm is adapted, as said she rotates and the revolving arm comes into contact w1th the ener 'zed contact correspondmg to the depresse key, to be operated to engage and stop the index wheel to stop the type n poslt on relative to the platen of the print.- mg mechanism whereby to print the corresponding character by pressure of the paper on the type by a platen operated by platen operating means comprising a one-revolutionprinting clutch set in operation by and on the actuation of said selecting device, thereby to print the character. A spacing means or mechanism is provided comprising a one-revolution spacin clutch whereby said ty e wheel is' space automatically each time the character is printed, or manually from the ke -board. There'is provided a. special ke re ease mechanism or detent means for hold i'n'g said keys depressed until said spacing means is electrically o erated,thereby to preventthe depression 0 another key before the spacmgwoperation is complete, said 'detent mg released by the current that opprovided a mechams'ni comprising a one-revolution clutch for returning the type wheel to feeding the paper and spacing the lines.

Other objects of the invention will appear as the description proceeds; and while herein details of the invention are described, the invention is not limited to these, since many and various chan departing from the spirit of the invention or exceeding the scope of the appended claims. 1 I p Inthe accompanying drawings, showing by way ofexample one of many possible embodiments of the invention, Fig. 1 is a front elevation of the bulletin printing machine, some of the details being removed; v

Fig. 2 is a side elevation of the same; Fig. 3 is adiagram of the electric connectes may be made without selecting mechanism;

Fig. 8 is a fragmental front elevation o the one-revolution printing clutch;

Fig. 9 is a fragmental side elevation of the printing clutch operation initiating link; and

Fig. 10 is a transverse vertical sectional view, partly in elevation of the spacing clutch.

The frame.

The various mechanisms of the machine are carried on a base 10 and a frame comprising a pair of upright frame side members 11 and 12 and a top connecting member 13.

The type wheel and shaft The yieldably rotated type shaft 15 ismounted in said frame near the lower art thereof and projects from said frame at 0th ends and carries the rotatable type wheel 16 splined thereon or otherwise constrained to rotate with the shaft. An index Wheel 18 fast on said shaft near the frame members 11 is provided with double shouldered peripheral teeth 19 (Fig. 7) and laterally projecting pins 20 and 21 on opposite sides of the wheel near said teeth and arranged in staggered relation for a purpose to be explained.

The (trme mechanism A motor bracket23 (Fig. 2) disposed on said base 10 near said frame piece 11 at the index end of the machine carries a direct connected motor-generator set mounted on said bracket and comprising a motor 24 suit able for the commercial current from the line 25 (Fig. 3) whichis to operate the machine, a generator 27 for generating current suitable for the operating parts of the machine,-

and a motor-generator connecting shaft 28 connecting said motor and generator and disposed transverse to the plane of the machine and carryin a worm 29 engaging a worm wheel 30 (F 1g. 8) carried on a counter shaft 31 disposed above said worm and approximately in the plane of the machine.

A type-shaft rotating gear 35 mounted on said counter shaft engages a loose gear 36 loosely mounted on said type shaft at the projectin ends opposite from said switch. A ribbed riction disk 40 (Fig. 2) fast on said type-shaft and'engaging the outer face of said loose gear is constrained to rotate with said shaft and is adjustably pressed against insulatin said gear by a pair of lever arms 41 (Fig. 1) pivotally mounted as at 42 near the periphei'y of the outer face of said loose gear and intermediately' engaging said friction disk and having their inner free ends disposed near an extension 43 of said shaft 15. An adjust-- in nut 44 on said extension and a collar 45,

be ween said nut-and said innerends and engaging said inner ends, engage a spring 46 compressed therebetween to cause said friction disk to engage said loose gear, Whereby,as said loose gear is positively rotated by the motor, the type shaft will be yieldably rotated thereby.

The selecting commutator switch explained. The stationary part of the switch 7 50 is mounted on one frame piece 12 and comprisesan insulating support and'a series of contacts 53 each corresponding to a character on the type wheel. These contacts may be arranged in staggered relation on opposite faces of the support so as to be alternately engageable by one of the contacts 51 and 52 of the switch arm when the corresponding character of the type wheel is in printing position. The selecting switch is shown more in detail in said patent.

The type writer contact switches A usual typewriting machine 55 (Fig. 4), which may be remote from the printing machine, comprises a keyboard having a series of key levers 56 corresponding to the contacts 53' on said switch and the corresponding letters of the type wheel 16, a typewriter platen 57, and type bars 58 connected to said levers and adapted to strike paper carried on said typewriters platen. A frame 60 carried be low said key levers transversely to the plan of movement thereof comprising an uppe. frame member 61 and a lower conducting rame member 62 respectively provided with a'pair of series of upwardly openingplunger bores, 63, 64, 65 and 66, the bores of the upper frame member being provided with reduced axial extensions 67 passing down through said upper frame member. The bores of one series'are arranged in staggered relation with the bores of the adjacent series (Fig. 3) to insure proper relation with the key levers. Vertically movable plunger rods 70 disposedin said upper bores and extensions engage the lower face of corresponding key levers 56 and are provided interme diately with spring receiving plungers 71 fast on the rods and movable up and down in the bores and engaged by springs 72 compressed the bores. An insulating board 75 secured to the bottom face of said up er frame member 61 and provided with per orations receiving said rods 70 carries flat contact springs 76 having theirouter ends anchored near the outer part of the under face of said board and having theirv inner free ends engaging I said rods 71'and provided on the lower face with contact buttons 77. An insulated cover one end pivotally connected to the free en plate 78 mounted on the upper face of said upper frame member and provided with perforations receiving said rod holds the plungers and rods 71 in place. a h

A similar cover plate 80 is mounted on lower frame member 62 and provided with small vertical bores 81 co-axial with said lower bores and receiving contact rods 82 disposed normally out of contact with said buttons 77 and engageable' by' the'buttons when the said flat springs are depressed. The rods 82 are provided at their lower ends with terminal plungers 84 engaged by'springs 85 disposed in said lower bores to yieldably hold said contact rods raised and to permit the latter to be depressed as the key levers are depressed, thus to make a good contactwith the buttons. A 'ommon conduct-ing line 87 (Fig. 3) connec one pole 88 of the generator to said lower conducting frame whereby all of said conducting contact rods are connected to said pole. Conductors 90 connect said flat springs 76 to the corresponding contacts 53 on said commutator switch whereby when one of said key levers is depressed, electrical. connection is made between said common line 87 and the corresponding commuta or contact which said revolving arm will reach when the character on thetype wheel corresponding to the depressed key lever reaches printing position, whereupon the connection is made with the conductor 53 or 54 depending upon which moving contact 51 or 52 engages the energized contact 53'. The conductors 53 and 54 lead to the selecting mechanism, now to be described for stopping the type wheel in printing position.

The selecting mechanism A selector magnet bracket" 95 (Fig. 7) pivoted-beneath said index wheel 18 carries a pair of-selector magnets 96 and 97 (Fi 1 and. 3) each having one terminal 98 stop latches 112' (Fi 1 and 7) are pivotally connected to said racket 95, each normally out of contact with said pins 20 and 21 t5 and adapted when released to engage one of 3) electrically connected as by the conducducting-line 106 to the other pole 110 of the p said pins to stop the index wheel and'the type v shaft, as will be explained, whereby said loose gear 36 revolves in frictional engagement with said disk 40 and leaves the selected type in printing position. Individual armatures 113 for the respective selector magnets are pivotally mounted on said brackets an'd yleldablyheld away from said magnets as by the tension spring 114. Elbow detents 115 pivoted on said bracket and havin of the respective armatures 113 and the other. I

' end enga geable under the respective inwardly turne and of the latches, hold the latches out of entails 116 formed on the fulcrum gagement with said pins until one of the magnets. is energized as explained, and draws the detent 115 from under a. tail and permits 'tion from w ich the lower part of saidindex l(as shown by the arrow of Fig.

wheel moves 7) and is yiel ably permitted to move a short distance in its direction of movement after one of said latches has been released, by the movement of one of said armatures 96 or 97 induced by the energizing of the ma net brought about by the current received romv one of the commutator contacts corresponding to a depressed key. A cam collar 129 secured on said plunger rod engages a locki'ng pawl 130 pivotally connected to said bracket 125 to raise the pawl into lockin engagement with one face of one of sai I teeth 19,- on the-movement of the plunger I as explained, thereby to stop the index wheel in position to print the character corresponding to the'depressed key lever. A recoil pre-- venting detent 131 carried on said locking pawl and adapted to rise into engagement with the rear face of the tooth just to'the rear of the tooth'engaged by the awl, thereby prevents recoil -movement 0 .the index wheel, the type shaft and the parts carried thereb The selecting mechanism is shown somewhat more in detail in said patent, The printing dutch operating mechanism A laterally projecting clutch operation initiating pin133 is earned fast on said looking pawl and engages in vertical slot 134' (Fig. 9) at the upper'end of a vertical releas ing link 135 and provided with an undercut shoulder 136 adapted to engage over said pin 133 thereby to raise the link when the locking pawl is raised, and to be released from said pin when said shoulder'is pushed off from the phi, as will be explained. An elbow lever 138 ig. 8). fulcrumed at its elbow 4 aeaasos j part on said bracket 23 has the free end of its motive arm 139 pivotally connected to the lower end of said link.

The printing clutch A pawl carr ing disk 140 is carried fast on a printing sha t 141 co-axial with said counter shaft 31 and supported on a bearing bracket 142. A ratchet wheel 144 fast on said shaft rotating gear is engageable by a clutch' pawl 145 (similar to the pawl 200 of Fig. 10) pivotally connected onsaid disk and adapted to be yieldably sprin pressed into engagement with the teeth 0 said ratchet and provided with a tail normally engaged by the upwardly pointing active arm 136 of said elbow lever 138 thereby to hold said pawl out" of. engagement with said ratchet wheel.

Operation of the printing clutch When said tail is engaged by the upwardly pointing active arm of said elbow lever, the lever holds said pawl out of engagement with said ratchet wheel, whereby the printing shaft is allowed to remain stationary as when said locking pawl 130 (Fig. 7 is in lowered position. But when said locking pawl 130 is raised to locking position, as heretofore explained, said link 135 is raised and said active arm 146 is caused =0 move from under and release said tail to permit said pawl 145 to engage the ratchet wheel 144 and cause said disk and printing shaft to be rotated by said ratchet wheel through the distance of one revolution. A link releasing cam 148 (Figs. '7 and 9) carried on said printing shaft en.- gages said link 135 and pushes said shoulder 136 from said printing pin 133as said printing shaft er orms a complete revolution, whereby said active arm- Wlll again engage said tail and release said yieldably pressed pawl 146 from said ratchet wheel, thereby to permit-the printing shaft to stop at the end of one revolution.

n printing mechanism An upwardly disposed printing link '150 (Fig. 7) is eccentrically pivoted to a latch releasing cam 151 mounted on the endof said printing shaft near said locking pawl and has its upperend pivotally connected to the free end of a-link arm 153 mounted on a rocking shaft 154 mounted on the adjacent side frame member 11. An upwardly disposed printing bar-155 (Fig. 2) pivotally connected at its lower end to the moving end of said link arm 153 has its upper end p1v-' otally connected to the free end of the motive arm 156 (Fig. 1) of a toggle elbow-lever 157 fulcrumed at its elbow part on said frame for movement in the plane of said frame. A vertically movable platen bar 160 disposed across said frame and having its ends vertie cally guided in said side members 11 and 12 just above said type wheel has one end piv- Operation of the printing mechanism- Each rotation ofthe printing shaft, as previously explained, brings about reci rocatory movement of the upwardly dispose link 150 and the bar 155 causing said to gle mecha-- nism to operate each time the printing shaft passes through a complete operation, thereby pressingdownwardly the platen'160 and the paper 166 (Fig. 2) against the type wheel,

' the type wheel and index wheel bein held locked by said locking pawl 130 an said recoil preventing detent 131. All armature releasing lever 167 (Fig. 7 intermedi'ately fulcrumed on said bracket 124 is provided with a motive arm 168 engageable and depressable by said releasing cam 151 after the printing operation has taken place, and is provided with an active arm 169 engageable under said tails 116 thereby to release said latches 112 from the index pin 20 or 21 and to permit said tail to permit said elbowdetents 115 to be drawn, under the action of said spring 114, into latching position under the tails, thereby to release the index and type wheels for movement to another printing position.

The spacing clutch operating mechanism A laterally projecting spacing initiating bar 170 (Figs. 3. and 7) is pivotally connected 'at its inner end to the lower part of said 1 upwardly disposed link'150, whereby as the lower end of said link is eccentrically moved said initiating bar will have a reciprocating motion, said bar being bifurcated at its outer end to form a slot. A yieldably opened spacing switch 17 3 is provided with a plvoted contact lever 174 having a pin 17 5 engageable in a slot 17 6 in the bar 17 0. Said switch is provided with a 7 contact member 177 whereby said switch is closed by said initiating bar after the printing operation has taken place and against the action of the compression spring 178. The closing of said switch energizes a. spacing magnet .180 (Figs. 3 and 8) mounted'on the outer face of said motor generator supporting bracket and electrically .connected across the generator poles 1'10 and 88 (Fig. 3) by conductors 106 and 105, cutout switch 104, conductors 103, 102 and 181,

the spacing magnet 180, conductors 182 and 183, the spacing switch. 173 and conductors lng connecting link 186. A pawl detent rocking shaft 189 (Fig. mounted on said bracket 23 near and'parallel to said worm shaft carries at one end a downwardly pro- Jecting arm 190 pivotally connected to said spacing link 186. said rocking shaft also 'carriesan upwardly pointed detent 191 presently to be mentioned.-

The spacing clutch A ratchet wheel 195 (Figs; 8 and 10') secured to-a collar 196 fast on said counter shaft 31 is spaced a slight distance from a spacing gear 197, loosely mounted on said counter shaft and provided with a pawl carrying disk 198 fastthereon adjacent tosaid ratchet wheel. The clutch pawl 200111- termediately pivotally connected to said disk is provided with a hooked end 201 ada ted for yieldable engagement with the teet of saidratchet under the action of the spring 204 and is provided with an outwardly dis posed tail '205' adapted normally to be engaged by said detent 191 whereby the pawl 1s normally held out of en agement with said teeth, whereby the rate et wheel and counter shaft may be revolved without revolving the spacing gear 197 Operation of the spacing clutch operating mechanism and the spacing clutch The energizing of said spacing magnet 180 brought about by the closing of said spacing switch 173 causes said detent to be removed from engagement with said tail 205 to permit the pawl to be spring pressed into engagement with said ratchet 195, thereby to cause the rotation of the spacing gear. The closing of said spacing switch is of such short duration that the magnet 180 may be de-energized and the detent 191 returned to normal position before the complete rotation of the spacing gear 197, whereby said tail is again engaged by said detent and the pawl released from the ratchet wheel, thereby to permit the spacing gear 'to cause rotating, after having rotated through one revolution.

The magnet 180 may also be energized by depressing a spacing key lever, closing the spacing contact 207, 3) whereupon current passes through pole 110, conductors 106,.

105, cut-out switch 104, and conductors 103, 102, 181, spacingmagnct 180, and conductor 182, as above "explained, and then through conductor 240. and switch207, and the come mon line 87, thus energizing the spacing magnet 180 and operating the spacing mechanism as above explained. I

' sion 0 The spacing .mechanum' A horizontal spacing lead screw shaft 210 (Fig. 1) mounted in the lower art of the main frame has loosely mounte thereon a spacing clutch ar 211 engaging said spac- 1 gear 197 an provided with an outwardly pointing hub 212 provdded with clutch teeth 213. A slidable clutch member 215 is splined on said shaft 210 to constrain the shaft to rotate therewith and is provided with an in termediate annular oove 216 and clutch. teeth normally engaging the teeth 213 of said hub 212. A guide bar 218 (Fig. 6) near and f parallel to said lead screw shaft carries an ht spacing bracket 219 (Fig. 1) prov1 embracin the threads of the lead screw'shaft. Said brac et 219 is provided at its upper end with a bifurcated yoke 222 engaging in an annular groove .223 of the t ewh'eel hub. The pitch of said lead threads is'such that as the spacing gear rotates said one. revolution,

at its lower end with a leadnut' 220' the clutch-gear hub-teeth 213 will engage said I clutch member and rotate said. lead-screw shaft sufiiciently to cause said spacing bracket 219 and type wheel to move along the type shaft andlead screw shaft, one letter space distance. p

The key release mechanism This mechanism comprises detent means for holding the depressed typewriterkeys depressed until the selecting mechanism and spacing mechanism are electrically operated, thereb to give a Si nal against the depres- 2 another key% place.

The detent means comprises a pivoted do tent 225 (Fig. 4) mounted on the typewriter frame and adapted to engage behind the typewriter type 226 at the instant of impression, thereby to hold the typewriter key depressed to give the printing and spacing mechanism time to act, after which the detent 225 will be raised, as will .be'explaind, by a vertical releasing rod "227 engageable efore the spacing takes under said detent. The lower end of saidrod I is passed through a hole in said insulating board to near a release bracket 228 secured to the lower part of the ty ewriter support 230 and is provided with a at base'231 (Fig. 5) and an upright bracket at one side of said base. An armature 232 pivoted to the upper end of said bracket is leasing lever 234 secure thereto and engaging under said rod, whereby when the arma-. ture is lowered said rod is raised. A releas-' ing magnet 235 on said base and influencing said armature is provided with conductors 236 and 237 (Fig. 3) whereby said key releasing magnet is connected in parallel with said,

spacing magnet, but in series with the spacing switch,.whereby, when the spacing magnet is operated after the, printing operation has taken place, the releasing magnet 235 will be rovided with a re-, 1 r

energized thereby to depress its armature and raise said detent to release the typewriter key to permit the key for the next letter to be struck. Instead of the magnet 235 and the detent, the circle 235 of Fig. 3 may represent a simple electric lamp, in which case the operator would merely wait for the lamp to light up before striking the next key.

Operation of the key release mechanism When the key lever 56 is depressed, the detent 225 immediately engages and holds the type 226 raised and prevents another key from being completely depressed. The detent then remains in the position of Fig. 4 until the spacing switch 173 is closed, whereupon current passes through the terminal 110, the conducting line 106, the conductor 105, the cut-out switch, the conductors 103 and 236, the releasing magnet 235, conductors 237, 240 and 183, spacing switch 17 3, conductor 184, the common line 87 and the terminal 88, thus energizing the releasing magnet raising the detent 225 and releasing the type bar 58 so that another key lever may be operated for again. selecting type on the type wheel. a I The paper feedland type wheel return clutch operating mechanism A line spacing or paper feed magnet 245 (Figs. 1 and 3) mounted on the frame member 11 is connected across between said common line 87 and said conducting llne 106 in series with. the key lever switch 246 through conductors 247 and 248. Said magnet is provided at its lower end with a yieldabl downi wardly, moved feed armature 250 (Fig. 1) to the free end of which is pivoted a downwardly disposed link 251. A pawl detent rocklng shaft 252 mounted on said frame 11 nearthe lower end of said link carries at one end a 1 horizontal projecting arm 254 pivotally connected to said line spacing link. Said rocking shaft also carries a downwardly pointed detent 255, presently to be explained.

The combined paper feed and type 'wheel return clutch A ratchet wheel 267 fast on a sleeve 268 fast on saidloose gear 36 is engaged by a clutch pawl 270 (similar to the pawl 204 of Fig. 10) pivoted on a pawl carrying disk 27-1 loosely mounted on said sleeve adjacent to said ratchet wheel and carrying fast thereon a line spacing or paper feed eccentric disk 272. The clutch pawl 270 is like the pawl 204 of Fig. 10 and is intermediately pivotally fulcrumed on said disk 271 and provided with a hook end adapted for yieldable engagement with the teeth of said ratchet wheel 267 and provided with an outwardly disposed tail normally adapted to be engaged by said detent 255 whereby the pawl is held out of engagement with saidteeth whereby aeaaeoe with rollers 277 engaging said eccentric disk 272 at opposite sides, whereby when said disk is revolved through a rotation, the paper feed lever will be given one complete oscillation. The active arm 278 of the paper feed lever is approximately horizontally disposed, as shown in Fig. 2.

type wheel return ehutch The energizing of said line spacing or paper feed magnet 245 brought-about by the operatlon of the line spacing paper feed lever Operation of the combined paper feed and 580 switch 246 of the typewriter causes said detent 255 to be removed from engagement with said pawl 270 to permit the pawl-to be spring .pressed into engagement with the ratchet wheel and cause the rotation of said eccentric disk and the oscillation of the lever 275 in order to bring about operation of .the line spacing or paper feed mechanism, and the type wheel return mechanism presently to be described.

The closing of said paper feed switch 246- is of short enough duration to permit the magnet to be deenergized and the detent to be returned to normal position before the complete rotation of the eccentric disk whereby said pawl is again engaged by said detent and t e pawl released from the ratchet, thereby to permit the paper feed eccentric disk to remain at rest or to be revolved again in like manner to feed the paper another line space, on repeated or continued pressure on the paper feed key lever.

The type wheel return mechanism and clutch A downwardly'disposed carriage return link rod (Fig. 1) 280 pivotally connected to the intermedlate part of said active arm 278 is pivotally connected to an elbow level 281 fu crumed on said side frame 11. The motive arm 282 of the elbow lever is horizontally disposed and provided with a downturned end 283 and an outwardly turned perforatedear 284 loosely receiving said link rod and engage on its lower face by a nut 285 at the lower end of the'link rod, whereby when said paper feed lever is oscillated said link rod is raised and the elbow lever oscillated. A short link 288 pivotally secured to the lower free end of the downwardly pointing active arm of said elbow lever 281 is pivoted at the other end to a clutch shift lever 289 near to said lead screw shaft 210 and having-its left hand endpivotally connected'to the right hand end of a clutch shift rod 291 slida ly mounted in the lead screw shaft brackets 292 and 293 and in alinement'with said shift bar 290. A clutch shift bracket 295 fast on said shift rod is provided at its upper end with a yoke engageable in said annular groove 216 of the the clutch member 215,. A return clutch ar 296 loosely mounted onsaid lead screw s aft is. provided with a cone-shaped recess 297 adapted. to engage a friction disk 7 298 of the clutch member 215 when the latter disk 298 engages in the recess, said type wheel bracket and said wheel are quickly returned to initial position.

A sliding detent 305 (Fig. 1) is'provided with an upturned end 306 adapted to be yieldably moved rightwardly, under the in-- fiuence of a spring 304, to aposition under Lsaid downturned end 283 when the latter is raised, thereb to lock said elbow and'clutch v levers and friction disk in clutch returning osition until said type wheel is returned to initial position, whereby said slidable detent 305'is engaged by said spacing bracket 219 and said ralsed end 306 removed from under theelbow-lever-detent thereby to permit 'said elbow lever 281,to resume normal position and the friction disk to disengage from the recess under the action of a helical spring 307 on the r0d291. The spring 308 serves to cushion this movement. Y

A safety lever 310(Fig. 1) intermediately pivotally mounted on said guide bar 218 is adapted to be oscillated by the nut'220 when 'said active. arm 284 to be raised thereby to- 'plained. f 'qpei'atz'on of the type wheel approaches the end of the line, and to engage a pin 311 carried on said clutch shift bar, whereby said clutch bar is forced leftwardly to returning position, thereby to cause the friction disk 298 to engage in said recess 297 and the detent end of permit said raised end 306 of the sliding detent 305 to move under the do'wnturned end until the type wheel is returned to initial position, whereupon the detent is pushed from under the downturned end, as exthe type whed return clutch and mechanism 'Oscillatory movement of'said elbow lever 281 brought about by the rotation of the eccentric disk causes saiddownturned end 283 to be raised and said active arm of the elbow lever to be moved rightwardly on Fig. 1

thereby to cause leftward movement of said clutch shift bar 290 and rod and clutch member 215 thereby to cause the teeth of the clutch member to disengage from the teeth 213 of said clutch gear and to cause said friction cone disk 298 to be moved leftwardly into frictional engagement with the recess 297. During this operation,'as the downturned end 283 is raised the raised end 306 of the sliding detent is yieldably moved under said downturned end, thereby to lock said elbow and clutch levers, and friction disk 298 in clutch returning position, until said type.

pin 311 is engaged by said safety lever whereby said clutch bar 290 is forced to returningposition, thereby to cause the friction disk 298 to engage in the recess 297 and -the downturned end 283 of said elbow lever to be raised, thereby to permit said sliding detent to engage under the downturned end until the type wheel is returned to initial position as above stated.

The paper feed mechanism The paper'166 from the-roll 315 of paper on the supply roll 316 passes beneath the tension roll 318 (Fig. 2) over the interme-- diate roll 319, beneath the lower guide rolls 320 and 321 andplaten 160 .above'and over the upper guide roll 322 under the .feed roll 323 and around the take-up roll 325. I The supply roll 315 (Fi 2) is horizontally disposed at the back 0 said frame a slight distance and higher than said platen and is provided with shaft ends 326 removably rotatably mounted in bearings 327 at the rear of said main frame. The upper guide roll 322 is mounted forward of the upper partof said main frame and thus a large exposureportion of the paper between the rollers 320 and 322 is provided. I The feed roll 323 is rotatably, disposed across said frame about midway between saidu ner and lower guide rolls and provided with stub shaft ends 328 and 329 (Fig. 1) rotatably mounted on the side frame members 11 and 12. The removable take-up roll 325 is provided with shaft ends 330 and 331 removably rotatably mounted in bearings 332 on the rear of the frame side members 11 and 12. A ratchet wheel 334 fast on one of the'shaft ends 3280f the feed roll is yieldably engaged by a hooked pawl 335 carried on a pawl lever 337 fulcrumed on said shaft end 328. A feed link 338 (Fig. 2) is pivotally connected to said pawl lever and to the free end of the active arm 278 of said feed lever 275, whereby when said feed lever 275 is oscillated said pawl the ratchet wheel and feed roll the distance of one tooth, thereby feeding the paper up-' wardly a distance of one inter-line space.

A presser roll shaft 340 rotatably mountedbetween said side members 11 and 12 beneath ,said feed roll carries fast thereon a plurality of presser roll brackets 341 carrying at their outer upper ends presser rolls 342 adapted to engage the paper on thefeed roll thereby to hold the paper in feeding frictional engagement with the feed roll. A motive arm 345 fast on, said presser roll shaft ad]acent to one of said side members carries a locking lever 346 pivotally mountedon the free end of said motive'arm and provided at its fulcrumed end with a locking lug 347 adapted when the lever is lowered to engage substantially perpendicularly against the side member 11 thereby to force and lock the presser rolls 342 in firm engagement with the paper. The locking lever is raised when it is desired to thread the paper on to the feed roll. Take-up pulleys 350 (Fig. 1) fast on the shaft ends 329 and 331 carry a take-up roll at the side opposite from said ratchet wheel. A belt 352 yieldably connects said pulleys, whereby as said feed roll is rotated to feed paper to the take-up roll 325, said 1' ake-up roll is rotated to wind up the paper fed thereto; Said pulleys and belt are so proportioned that the take-up roll will take up all of the paper fed to it when the paper rolled is small and will permit the belt to slip a slight amount when the paper roll 1s large, thereby surely to wind all the paper fed to the take-up roll and at the same time prevent undue tension on the paper.

A horizontal'tension-roll bracket-supporting shaft 355 (Fig. 2) carried on the rear of the main frame about on the level with the platen has fast thereon a pairof supporting arms 356 rotatably supporting said tension roll 318. A lug 357 fast on one end of said shaft engages a brake rod 358 resting on said lug and vertically guided in said frame and yieldably spring pressed downwardly against the lug by a spring'359. A brake drum 360 fast on one of the shaft ends 326 of said supply roll is engaged by a brake lever 362 piv-.

. oted on said presser roll shaft 340 and provided with a shoe 363 engaging said drum. The brake lever is connected'to the upper end of said brake rod 358 whereby when the paper leaving the supply roll is tensioned enough to raise the tension roll 318, said brake shoe will be raised from the brake drum.

to permit the weight of said tension roll and the force of said brake rod spring to force the additional paper from the supply roll and permit the brake shoe to again engage the drum, whereby even tension is maintained on the paper.

Operation of flu; paper feed mechanism Whenever it is desired to feed the paper one or more lines, the paper feed key lever is depressed closing the switch 246 (Fig. 3),

energizing the magnet 245, rotating the disk 272 (Fig. 2), oscillating the active arm 278 and the pawl lever 337, and rotating the paper feed roll 323 one line space. This operation also sets in operation the type Wheel return mechanism; and. if the paper is to be fed one or more than one line space either after the Out-out switch The cut-out switch 104 (Figs. 1 and 3) is provided for preventing the operation of the spacing and selecting mechanisms while the typewheel is beingreturned to initial position. As hereinbefore fully described, the cut-out switch is interposed in series with the operating circuits of the-spacing magnet and the printing magnet. It is therefore evident that when the cut-out switch is open, these mechanisms cannot operate. The cut-out switch is therefore so arranged that when the type wheel is being returned, the cut-out switch will be open.

The cut-out switch carried on said base 10 comprises terminals 365 and 366 to which are secured said conductors 103 and 105.

These terminals are normally connected by the switch lever 368 adapted to be opened by a pin 369 carried on the clutch shift bar 290 whenthe latter is moved leftward to returning position. Said switch being connected in series between said spacing magnet and said selecting magnet and the source of power when thus open prevents furtherselecting oril spacing during the return of the type w ee The ink ing mechanism latter moves on the type shaft, and carries the.

container 371. A pair of inking roller levers 372 on the outer side faces of said container 375 connecting theirouter'ends. An inking the container and rotate A sprea er roller 37,7 rotatably mounted in said container is provided with shaftv ends 378 project through arcuate. openings 379 in the s des 9 ly journalledj n said levers 372. A spring 380 tensioned between said yoke and abracket 381 on the upper part of the tank, holds said ink ng roller yieldablf' raised a alnst the type of the'type whee 383 intermediately' fulcrumed on said fulcrum shaft 374 within saidcontainer is provided'with a rounded spreading portion 384 normally yieldably pressed into engagement with said inking roller. Cams 385 are carried on said guide bar 218 and are engageable by the projecting end of said spreader lever, whereb as said type wheel reaches either limit 0 ment of the cam by said projecing end causessaid spreader to be moved out of engagement with the roller 37 7 and to dip into the ink at the bottom of the container. It is'not necessary to provide both of the cams 385 and the device would be operative to ink the type wheel without either of the came. o

The operation of the bulletin printing machimas a whole The 0 ratio of all of the mechanisms of the mac ine ha e been fully explained, and the o eration o the machine as a whole may beion y briefly described.

The roll 315 of paper is placed upon the I supply roll 316' and the paper threaded writer may be depressed once or more thus closingthe spacing switch 207 (Fig. 3) and spacing the type wheel to indent the line for the beginning of the paragraph. Then the words of the bulletin to be printed are spelled outupon the typewriter, a pause being madeafter each letter to give the magnet 235 time to act and release the key. Spaces between the word are made by depressing the spacing lever to close the spacing switch 207 and'energizethe spacing magnet 180 without operating the selecting mechanism.

' When the end of the line is approached the type wheel may be returned by depressing the paper feed, lever and closing the paper feed switch 246, thus setting in operation the paper feed. whereupon the clutch operating bar 290 Fig.1) is shifted leftwardly, setting-the return clutch in operation.-and opening the cut-out switch 104, thus holding the selecting and spacingmechanisms iroperative'u'ntil the type wheel is entirely returned. If more than one line space of paper is to be fed, the depression of the paper feed key-lever is repeated or con tinned.

' printing characters of; the t nism, a platen supported or engagement movement, ,engagevaround the various rolls as shown in Fig. 2, mg type the locking lever .346 being raised to permit If only reasomthe wheel should be carried to the end of 't e line "without depressing the pa r .feedkey-l'ever, the. sa

lever 310 ig. 1') is actuated, thus typewhee'l, during which time,

returning the .the' paper feed may be actuated onceor more, by depressing the paper-feed key-lever printing characters corresponding to the.

therewith of the characters ofthe means for printing, means cooperating between the typewriter mechanism and saidmeans for printin writer mecha- 4 for bringing characters of; thelprovided with a key board, movable means .for printing provided with,

means. or printing into printing position ,for engagement with said platen during movev ment of. said means for printing and operation of said key board and which characters correspond to the printing. characters of the typewriter mechanism operated-by said he board, and means comprising one revolutlon clutch means for moving the means for printing for spacing thecharacters thereof. for engagement with said platen in suitable printing sequence.

2. A bulletin printing machine compris writer mechanism provided with printing characters operated by a key board, a wheelvhaving' printing characters on its rim corresponding to the printing characters ofthetypewriter mechanism, a platen sup- I ported for engagement therewith 1 of the printing characters of said wheel, means'cooperating between the typewriter mechanismand said wheel; for bringing into printing position for engagement withsaid platen during rotation of the wheel and operation of said key board characters .of the wheel which correspond'to the printing characters no 1 i of the typewriter mechanism operated by said I key board, and" means comprising a. onerevolution clutch means, for. moving said wheel laterally on its axis of revolution for spacing the characters thereof forengag'ement with said platen in suitable printing sequence,

3..A bulletin machine'comprising typewriter mechanism provided with printing operation, movable means for printing provided with printing characters corresponding to the'printing characters of the typewriter mechanism, a platen su ported for engagement therewith of thee ara cters of characters operated by .keys. nor. mallyinraised position and, depress1ble for ing position for engagement with said platen of the typewriter mechanism in depressed position. during operation of said means for spacing and preventing depression of a second key from normal raised position before said means has operated.

4. A bulletin printing machine comprising typewriter mechanism provided with printin characters operated by keys normally in raised position and depressible for operation, a wheel having printing characters on its rim corresponding to the printing characters of the typewriter mechanism, a. platen supported for engagement therewith of the printing,

characers of said wheel, means cooperating between the typewriter mechanism and said wheel for bringing the characters of the wheel into printing position for engagement with said platen during rotation of the wheel and operation of said keys and which characters correspond to the printing characters of the typewriter mechanism operated by said keys, means for moving said wheel, for spacing the characters thereof for engagement with said platen in suitable printing sequence, and means for maintaining a'predetermined character operative key of the typewriter mechanism in depressed position during-operation of said means for spacing and preventing depression of a second key from normal raised position before said means has operated.

5. A bulletin printing machine comprising typewriter mechanism provided withprintingcharacters operated by keys normally in I raised position and depressible for operation,

movable means for printing provided with printing characters corresponding to the printing characters of the typewriter mechanism, a platen supported for engagement therewith of the characters of the means for printing, means cooperating between the typewriter mechanism and said means for printing for bringing the characters of the means for printing into printing position for engagement with said platen during movement of said means for printing-and operation of said keys and which characters corre- I spond to the printing characters of the type,

writer mechanism operated by said keys, means for moving the means for printing for spacing the characters thereof for' engagement with said platen in suitable printing sequence, means for maintaining a predetermined character operating key of the typewriter mechanism depressed position during operation of said means for spacing and preventing depression of a second key from normal raised position before said 7 means for spacing has operated, and mechanism and said wheel for-bringing the characters of the wheel into printing position for engagement with said platen during movement of said wheel and operationof said keys and which characters correspond to'the printing characters of the typewriter mechanism operated by said keys, means comprising onerevolution clutch means for moving said wheel for spacing the characters thereof for engagement with said platen in suitable printing sequence, detent means for maintaining a predetermined character operating key of the typewriter mechanism in depressed position during operation of said means for spacing and preventing depresslon of asecond kc from normal raised position before said means for spacing has operated, and mecha- Illsm COm-PIISIDg' one-revolution clutch means for returnin said wheel to initial position.

7. In com ination, a. generator; a rotating type wheel; a revolving arm revolving there- With; a key board; a key-board switch comprising insulated flat springs 0 rated by the v key levers, and a lower con uctingframe having contacts electrically connected thereto; a conducting line connected to one pole of said enerator a common conducting line connecting the other pole of the generator to said lower conducting frame whereby all of said conductings are connected to said sec ond named pole; a commutator switch; con- 4 ductors connecting said flat springs 'to' the corresponding contacts on said commutator switch whereby when one of said key levers is depressed electrical connection ismade between said common line and the corresponding commutaior contact which said revolving arm will reach when the character on the type wheel corresponds to the depressed key lever, reaches printing position; a ses lector magnet for stopping said wheel and having one terminal electrically connected to said'switch arm and the other to said common line.

8. In combination, a yieldably rotated type shaft; av type wheel non-rotatably splined on said shaft; an index wheel and a revolving switch arm fast on said shaftya switch having an annular" series of contacts each corresponding to a character on the 1 4- vided with a air of series of upwardly openasselsos q 1 type wheel and engageable the switch arm when such' corresponding character is. in

printing position; 'a" writer key board comprising key levers; individual switches operated by said levers respectively whereby a source of electric current is connected to the corresponding contact of said series'; a platen; a device electrically connected to said arm and adapted, as said-shaft rotates andthe, revolving arm comes into contact with the energized contactto the depressed key,.to.

be operated to engage and stop the index wheel to stop the type in position relative to print the character.

the platen to print the corresponding character; and .a platen operating means comprising'a one-revolution clutch set in o eration by and on the actuation of said,

9. In combination, apluralityof type; a

key-board; selecting mechanism controlled by the key-board for selectingthe. type;

printing mechanismlfor causing the type to print; a type spacing mechanism; detent means-for holding the key-board inoperative until the spacing mechanism operates; a vert'ical releasing rod engageable under said detent for releasing the same; a release bracket secured to thelower part of the typewriter support and provided with a flat base and an upright bracket at one side of said base; an

' armature pivoted to the upper end of said upright bracket and provided with a'releasing lever securedthereto and engaging under said rod, whereby when'the armature is lowered said rod-is raised; and a magnet for moving said armature. I

10.IIn combination; key levers; a frame carried below said keyleversandcomprising an upper framemember and a lower conducting frame member, the latter being proing plunger. ores, the bores of one series being arranged in staggered relation with I, I the borcsof the next series; a board secured.

to" said upper member; flat contactsprings having their outer ends anchored near the having their inner free ends operated by said levers; a cover plate mounted .on the lower outerpart of the under face of said board'and frame member and received and provided with small verticallgbores co-axial with said lower bores; contact rods disposed in said small bores'and normally out of contact with said button and 'en'gageable by said flat springs when depressed, and provided at their lowe'rends with terminal plungers;

springs disposed in said' lower bores and enhold said contact rods raised; selecting means e0 vmechanism for sclecting the type comprisinggageable with said plungc'rs to yieldably comprising individual conductors connected to said flatspring's; and a current source having one pole connected to the selecting meansand the other to said lower frame member.

lL'In combination, a typewriter-having key levers; a frame carried below said key evice .to having their inner free ends engaging said levers transversely the plane of movement thereof and comprising an upper insulating frame member provided with a pair of series (Qfqupwardly o ning plunger bores, the bores of t e u per tirely through said upper frame member; 'vertically movable plunger rods disposed in said bores and extensions, and engaging the ewer faceof corresponding key levers and provided intermedia'tely with upwardly spring pressed plungers; an insulating board secured to the bottom 'face of said u per.

frame member and provided with per orations receiving said rods; flat contact springs 5, having their outer ends anchored near the outer. part of the under face of said board and rods and provided on: the lower face with con tact buttons common contact means'engageable by said buttons; a type-selecting means comprising individual conductors connected to said flatsprings; and a'source of current :having one ole connected to said selecting means and t e other to said contact means.

ame member being provided with re uced axlal extensions passing en- 12'. In combination," a yieldably'rotated type shaft; a type wheel splined 'on said shaft; an index wheel fast on said shaft and provided with double shouldered peripheral teeth; a selecting device comprising a locking pawl to rise and engage the front face of one of said teeth to. stop the wheel in printing position; anda recoil preventing detent car- I ried on said locking pawl andvconstrained to rise-into engagement with'the rear face of the adjacent tooth just to the rear 'of said tooth engaged by the pawl. t i

13. In combination, a yieldably rotated type shaft; a type wheel splined on said s aft an index wheel fast on said shaft and provided with double shouldered peripheral teeth and laterally projecting pins near said .teeth; a selecting device adapted to be operated to engage and be moved by one of said pins just before the index wheel reaches printing position movable means connected tosaid tooth engaged by the pawl thereby to prevent recoil movement of the index wheel, the type shaft or the parts carried thereby, N

14. In combination,- a type; a, selecting an upwardly movable locking pawl; .prlntlng type; a laterally projecting clutch-operation initiating-pin fast on said locking pawl; a-v vertical releasing link provided'at its upper mechanism for pressing paper against the end wi'h a vertical slot provided with an un- I der cut shoulder adapted to engage over said pin; an elbow lever fulcrumed at its elbow part having the free end of its motive arm pivotally connected to the lower end of said link; a printing shaft; a drive member; a clutch interposed between said shaft and member and normally held in-operative by the elbow lever and permitted tooperate by movement of the elbow lever when said pawl rises and a link releasing'cam carried-on said printing shaft and adapted to engage said link to release said shoulder from said printing pin before said printing shaft, performs a complete-revolution, whereby said active arm will move to position to disable the clutch.

15. In combination, a' type; a selecting mechanism for selecting the typecomprising an upwardly movable lockingpawl; printing mechanism for pressing paper against the type; a laterally projecting cluch-operati n initiating-pin fast on said locking pawl; a

vertical releasing link-provided at its upper end with a vertical slot provided with an under-cut shoulder adapted to engage over said pin; an elbow'lever' fulcrumed at its elbow part having the free end of its motive arm pivotally connected to the lower end of said link; a pawl carrying disk; a printing a printing pin before said printing shaft performs a complete revolution, whereby said active arm will engage said spring pressed pawl and release it from said ratchet'wheel.

.16. In combination, a plurality of type;

printing mechanism ,for pressing paper against the type; a printing initiating lever; a printing shaft; a pawl carrying disk fast thereon; a drive gear; a ratchet wheel fast on said gear; and a spring pressed pawl pivotally mounted on said disk and adapted to be vieldably spring pressed into engagement with the teeth of said ratchet and provided with a tail normally engaged by the active arm of said elbow lever thereby to hold said pawl out ofengagement with said ratchet wheel; a latch releasing cam mounted on said printing shaft and operatively associated with said lever to cause the'latter to engage said tail on a complete rotation of the printing shaft; and an upwardly disposed printing link eccentrically pivoted to said printing shaft and operating the printing 7 mechanism;

an inwardly turned tail forme 17 In combination, an initiating lever; a driven shaft; a pawl carrying disk fast thereon; a drive gear on the counter shaft; a ratchet wheel fast on said gear; and a s ring pressed pawl pivotally mounted on sai disk and adapted to be yieldably spring pressed into engagement with the teeth of said ratchet and provided with a tail normally engaged by the active arm of said lever thereby to hold said pawl out of engagement with said ratchct wheel, whereby the driven shaft is allowed to remain stationary when said locking pawl is in lowered position, and said elbow lever l operates said active arm and is caused to release said tail to permit said disk to rotate;

and means operatively associated with said lever to cause the latter to engage said tail on a complete rotation of the driven shaft. 2

18. In combination, a frame; a rotating type wheel; printing mechanism for pressing paper against the type comprising an upwardly disposed link; a rocking shaft mounted on the frame; a link arm mounted on said rocking shaft and pivotally connected to the upper end of said upwardly disposed link; an upwardly disposed printing bar pivotally connected at its lower end to the moving end of said link arm; an upper toggle elbow lever fulcrumed at its elbow part on said frame and having its motive arm pivotally connected to said upright rinting bar; a vertically movable platen ar disposed across said vframe above said type wheel; a toggle link connected to the free end of the motive arm of said toggle lever and having its lower end pivotally connected to said platen bar; a set of toggle links pivotally connecting the opposite end of said platen bar to the other side frame member; and having its respective members parallel to said active arm and said first mentioned toggle link; and a synchronizing bar connecting the mid pivots ofsaid toggles.

19. In combination, a yieldably rotated type shaft; a type wheel splined on said shaft; an index wheel fast on said shaft and provided with laterally projecting pins; a pivoted selecting device adapted to be operated to engage and be moved by one of said pins as the index wheel nears printing posi- 'tion,,and comprising a pair-of stop latches normally 'out'of contact with said pins and adapted when released to enga e said pins;

5 on the-fulcrum end of each latch; a pair of selector magnets; individual armatures for the respective selector magnets for releasing said latches; stop means movable by said device to stop the wheel in printing position; a printing shaft set in operation by said stop means and carrying a releasing cam; and a releasing lever provided with a motive arm engageable by and depressible by said releasing cam after the printing operation has taken place, and provided with an active arm m reciprocating motion; said bar being bifurcated at its outer end to form aslot; a

yieldably open spacingjswitch'provided with abpivoted contact lever having a pin-en agea by said switch is closed by said'initiatin bar after the printing operation has taken p ace;

a spacin magnet electricall connected, in

' series w th the terminals said spacing -6 switch; and a spacing mechanism set in operation by said magnet. g

21. In combination a plurality of type;

selecting mechanism or selecting the typefi printing mechanism for pressing paper.

' paper feed mechamsm and the return mechanism; said combined mechanism comprisagainst the type; a spacing magnet energized by the operation of the prmting mechanism an armature pivotally connected in front of said magnet; a spacing connecting link pivotally connected to sa d armature; apawl detent rocking shaft carrying a ddwnwardly projecting arm pivotally. connected to said spacin link; an upwardly pointed detent.

carrie on said rocking shaft; a driving counter shaft; a ratchet wheelfast on said counter shaft; a spacing gear loosely mounted on said counter shaft and provided I with a pawl carryingdisk adjacent to-said ratchet wheel; a sprm pressed clutch pawl intermediatel 'piv'otal y connected on said disk for ,e dable engagement with "said v ratchet an normally en agedb said detent, whereby the pawl is held out o engagement with said teeth; the energizing of sai spacing magnet causing said-detent to be removed from engagement with said pawl to permit the paw to be spring pressed into engage: -ment with said ratchet and cause one rotation ofthe spacing gear, the ener 'zi .of

said spacing magnet being of short uration and spacing mechanism operated by sai gear; v

- 22. In combination, a 'eldably rotated type shaft; a type wheel'sli d-ably s lined on said shaft and provided with a hu having an annular oove; a one-revolution spacing clutch provided with a spacing gear driven thereby; a horizontally spacing lead screw shaft mounted below said wheel parallel to said shaft; a- .s acing clutch gear loosely mounted on sai shaft and engaging said spacing gearand provided with an outwardly pointing hub provided with teeth; a slid- I able clutch member splined on said lead screw shaft. to. constrain the" shaft to rotate there- .1 45 with and provided with clutch teeth normalsuch that as the splacing gear rotates one e in said slot, anda contact member w ere-- in printing position; printing mechanism for and an upright bracket on said 'de bar and provided at its. lower end wit 7 a lead-nut the threads of the lead-screw embracin (I provided at its-upper end with a shaft, an

:bifurcated yoke engaging in said annular V groove; the pitch of the lead-threads being v revolution the date gear will engage said clutchmember and rotate said shaft sufiiciently to cause said spacing bracket and type wheel to move along the type shaft and lead screw shaft, one letter space distance.

23. In combination, a key board having individual switches; a rotating type wheel; selecting mechanism controlled by the. key board for selectively stopping the type wheel pressing paper against'the type; a type spac-- 35 ing mechanism; a paper feed mechanism; a

type wheel return mechanism; and a com- .bined operating mechanism; controlled by the depression of a key lever for operating the '90 ing a paper feed magnet connected in series I with said key lever switches and provided at its-lower end with a yieldably downwardly .moved pa er feed armature; adownwardly disposed link pivoted to the free end of said armature; a pawl detent rocking shaft mounted on said frame near the lowerend of said link and carrying at one end a hori-' .zontal' projecting arm pivotally connected to said line spacing link; a downwardly pointed detent carried on said rocking shaft; and means comprising a one-revolution clutch set in operation by said detent for feeding the paper and returning the type wheel. 24. In combination, a selective printing type device; a type spacing'mechanism therefor; a paper'feed mechamsm; a printing device; a return mechanism; and a combined operating mechanism for operating the paper 11 feedmechanism and the'return mechanism; said combined mechanism'comprising a positively; rotated ratchet wheel; a loosely mounted pawl carrying disk adjacent tosaid ratchet wheel; aline spacing or paper feed eccentric disk fast on said pawl carrying disk; a clutch pawl intermediately pivotally fulcrumed on saidrdisk and adapted for engagement with .the-teeth' of said ratchet; means for'ca'rrying said pawl to engage the ratchetwheel through one'rotation; a'paper feed bell-cranklever fulcrumed. at its elbow part and having a motive arm widely forked and provided at the extremities of the fork prongs with rollers engaging said eccentric on opposite sides whereby when said disk is revolved the pa er feed lever will be given one complete oscillation; and means connecting the active arm of said paper feed lever 180 with the paper feed mechanism and the return mechanism.

25. In combination, a selective printing type device; a type spaclng mechanism therefor; a paper feed mechanism; a printing device return mechanism; a key lever switch; and a combined operating mechanism set in operation by the key lever switch for operating the paper feed mechanism and the re tion and releasable by contact with the returned printing device, thereby to disable the return mechanism.

27. In combination, a selective printing device; a spacing mechanism for moving the printing device in one direction; a printing device return mechanism for moving the device in the return direction and a mechanism for setting in operation the return mechanism and comprising an actuating link rod; an elbow lever havin its motive arm horizontally. disposed an provided with a,turn down end and provided with an outwardly turned perforated ear receiving said link rod and engaged on its lower face by the nut at the lower end of the link rod whereby when said rod is raised said elbow lever is oscillated; the printing device return mechanism being held in operation by the lower free end of the downwardly pointing active arm of said elbow lever, when said down turned end is raised; a sliding detent adapted to be yieldably moved under said down turned end when the latter is raised thereby to lock said return mechanism in returning position until said device is returned to initial position,

whereby said slidable detent is engaged by said deviceand removed from elbow-leverdetainingposition, thereby to cause said el-' bow lever to resume normal position and the return mechanism to become disabled.

28. In combination, a slidable selective printing device; a type spacing mechanism therefor comprising a lead screw and an upright bracket engaging said device; a bracket return initiating device comprising a clutch shift lever; a slidably disposed clutch reversing bar near said lead screw and having one end pivoted to said lever; a positively driven spacing clutch gear and a positively driven return clutch gear loosely mounted on said shaft; a slidable clutch member splined on said lead screw shaft and normallocking with said spacing gear; a clutch shift bracket fast on said shift rod and enteaches gaging the clutch member and engageable with said return gear when the clutch member is moved away from the spacing member; and a spring for holding the clutch. member in engagement with said spacing gear.

29. In combination, a slidable selective printing device; a type spacing mechanism therefor comprising a lead screw and an upright bracket engaging said device; a bracket return initiating device comprising a clutch shift lever; a slidably disposed clutch reversing bar near said lead screw and having one end pivoted to said lever; a positively driven spacing clutch gear and a positivelydriven return clutch ear loosely mounted on said shaft; a sli able clutch member splined on said lead screw shaft and normally locking with said spacing gear; a clutch shiftbracket fast on said shift rod and engaging the clutch member and engageable with said return gear'when the clutch member is moved away from the spacing member; a spring for holding said member in engagement with thespacing gear; a detent for holding said member in engagement with said return gear; and means for releasing the clutch member when said device is returned.

30. In combination, a selective printing device; a type spacing mechanism therefor comprising a lead screw and an upright bracket engaging said device; a return initiating device comprising a clutch shift lever; a clutch reversing bar slidably disposed near said lead screw and having one end pivotally connected to the lower end of said lever; a pair of lead screw brackets; a clutch shift rod slidable in said brackets and connected to the shift bar; an intermittently positively driven spacing clutch gear loosely mounted on said shaft and provided with a hub provided with clutch teeth; a slidable clutch member splined on said lead screw shaft and provided with a cone-shaped friction disk, an annular groove, and teeth normally engaging said clutch teeth; a clutch shift bracket fast on said rod and engaging in said groove; and a positively driven return clutch gear loosely mounted on said lead screw shaft and provided with a cone shaped recess adapted to engage said friction disk when the latter is moved thereto.

31. In combination, a frame having a base; and lead screw brackets on said base; a selective printing type device slidable thereon; a type spacing mechanism therefor comprising a lead screw in said brackets and an upright bracket engaging said device; a bracket return initiating device comprising a clutch .shift lever pivoted on said frame; a clutch reversing rod slidably disposed across the lower part of said frame near said lead screw and having one end pivotally connected to the lower end of said lever; a clutch shift bar slidably mounted in said lead screw 

